US3509873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractor
Assignee: GORDON W DROESKE
•
Filing: 1967-04-24
•
Granted: 1970-05-05
•
Expires: 1987-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jack B Karlin
- 👤 Gordon W Droeske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US475975A
Cited
DE468959C
Cited
US1707689A
Cited
US1747799A
Cited
US2670731A
Cited
US2863444A
Cited
FR1235135A
Cited
US3038468A
Cited
US3168093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |